Many fossils of dinosaur eggs have been yielded in Mongolia, although they were scarcely found in other places. The first discovery of dinosaur eggs in the world also took place in this country in 1923. These fossils came from red sandstones, wind deposits of the dry interior region. The wind carried the fine sands which would quickly have buried the dinosaur eggs. This seems the most likely reason for the abundance of well-preserved fossils in this country.

Dinosaurs laid eggs, but many of them remained unhatched due possibly to changes in the weather. Those eggs were buried by sandstorms, then some of them become fossilized intact. Some of those beds including the fossilized eggs were exposed in the long run by geological activity and erosion.

In Mongolia, larger eggs have been found in hard layers whereas smaller eggs have been found in the deposits of sands of dunes. This might be an indication of dinosaur territoriality.

Displayed are round-shaped, rough-surfaced eggs of an unidentified dinosaur. These are some of the largest dinosaur eggs found in Mongolia. The thickness of the eggshell is 2.5-3.0mm and its structure is very similar to that of modern birds. These dinosaur eggs were found laid in nests. The clutch size in one nest reached 32 or 33.

Top Menu Exhibits Menu

Copyright(C) 1997-2007@by Kanna dinosaur Center. All rights reserved.